package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.messaging.handler.annotation.support.MethodArgumentNotValidException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;
import java.util.List;
import java.util.stream.Collectors;
import org.springframework.context.support.DefaultMessageSourceResolvable;
/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
            log.error("异常信息：{}", ex.getMessage());
            return Result.error(ex.getMessage());

    }

    /**
     * 处理SQL 异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(SQLIntegrityConstraintViolationException ex){
//Duplicate entry '123' for key 'employee.idx_username'  这是异常信息
        String message = ex.getMessage();
        if(message.contains("Duplicate entry")){
            String[] split = message.split(" ");
            String username = split[2];
            String mas =  username+ MessageConstant.ALREADY_EXIST;
            log.error("异常信息：{}",mas);
            return Result.error(mas);
//        Column 'name' cannot be null
        } else if(message.contains("cannot be null")) {
            String[] split = message.split(" ");
            String name = split[1];
            String mas = name + MessageConstant.NOT_NULL;
            log.error("异常信息：{}", mas);
            return Result.error(mas);
        }     else{
            log.error("异常信息：{}",ex.getMessage());
            return Result.error(MessageConstant.UNKNOWN_ERROR);
        }
    }


}
